Abstract
The objective of this study is to demonstrate that strongly impinging jets-in-crossflow (JIC) will result in a counter flowing jet that will probably be unsteady. This numerical study was conducted in a 360o (complete cylindrical duct) computational domain using a steady-state Reynolds-Averaged Navier Stokes, RANS, and time-dependent URANS at various momentum-flux ratios J. Asymmetry in a steady-state RANS solution is very likely to be an indication of the flow’s instability and unsteadiness. RANS predictions clearly show asymmetry in cases of strongly impinging jets. RANS solutions show that steady-state solutions are not appropriate if the flow is, or is suspected to be, unsteady. RANS and URANS solutions for computational domains <360o will require boundary conditions at the edges of the computational domain and will not correctly represent the flow if it is unsteady even if the RANS solution converges. The results of this study are consistent with, and extend, the experimental and numerical results published earlier that were motivated by mixing in gas turbine combustors.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
